Funny, I spoke today with Scott-Martin Kesofsky about this topic.
When Scott was young, he worked in this field. He has friends who also did this, and I believe that one currently still does (the last of the Mohekans). Mathew Carter, he told me, was actually a punch-cutter, a long long time ago. I'm sure that he might be able to point you in a useful direction. He's on this forum too.
It would be fascinating, if those who had access to metal Hebrew type would scan and post them. High resolution scans I would create into OpenType fonts, to preserve the designs for future generations.
I know at RIT in Rochester, NY had set up a printing press for metal type, and used it about 20 years ago. I don't know if they have the manpower anymore. You might look there.






